Diamond Power Infrastructure on Tuesday said that a meeting of the share/warrant allotment committee will be held on April 28 to allot 1.2 crore fully convertible warrants on preferential basis. The company said the warrants will be allotted at a price not less than ₹55 a share to promoter group companies. The stock surged 19.85 per cent at ₹31.40 on the BSE.